Ibm 3745 series Parts list manual

SY33-2069-2

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3745 Communication Controller

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.-

Service Functions

CJ

Iii

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-.

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..

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-~-,-

o IBM

3745

Communication Controller

Models

130,

150,

and

170

Service Functions

Federal

Communications

Commission

(FCC) Statement

Note: This

equipment

has been tested and found

to

comply

with

the

limits

for

a Class A

digital

device,

pursuant

to

Part

15

of

FCC

Rules. These

limits

are designed

to

provide reasonable protection

against

harmful

interference

when the

equipment

is operated in a

commercial

environment. This

equipment

generates,

uses, and can radiate

radio

frequency

energy

and,

if

not installed and used in

accordance

with

the

instruction

manual,

may

cause harmful interference

to

radio

communications.

Operation

of

this

equipment

in a residential area is

likely

to

cause harmful interference in which case

the

user

will

be

required

to

correct

the interference at his

own

expense.

For

Canada, Canadian Department

of

Communication

Statement GX27-3883 applies.

Third

Edition (September 1990)

This

major

revision

obsoletes SY33-2069-1. Extensive changes have been made

throughout

this

edition, and

this

manual should be read in its entirety.

Changes

are

made

periodically

to

the information herein. Any such changes

will

be reported in subse-

quent

revisions

or

Technical Newsletters. Before using this publication in connection with

the

opera-

tion

of

IBM systems, consult

the

IBM

Systeml370, 30xx, 4300,

and

9370 Processors

Bibliography,

GC20-0001,

for

the

editions

that

are

applicable and current.

The

drawings

and specifications contained herein shall not be reproduced in whole

or

in

part

without

written

permission.

IBM

has

prepared

this

service manual

for

the use

of

IBM

customer

engineers in the installation,

main-

tenance,

or

repair

of

the specific machines indicated. IBM makes no representations

that

it

is

suitable

for

any

other

purpose.

Publications

are

not stocked at the addresses given below. Requests for IBM publications should be

made

to

your

IBM representative

or

to

the IBM branch office serving

your

locality.

A

form

for

readers'

comments

is provided at

the

back

of

this

publication.

If

the form has been

removed,

comments

may

be

addressed

to

either

of

the

following:

•

International

Business Machines Corporation,

Department

6R1

LG

180

Kost

Road, Mechanicsburg, PA

17055

• IBM France,

Centre

d'Etudes et Recherches

Service

0762, 06610 La Gaude, France

©

Copyright

International Business Machines

Corporation

1989, 1990.

All

rights reserved.

Note

to

U.S.

Government

Users -Documentation related

to

restricted rights -Use,

duplication

or

dis-

closure

is

subject

to

restrictions set forth in GSA ADP Schedule Contract with IBM Corp.

(

··

..

0

)

D

Special Notices

References in

this

publication

to

IBM products,

programs,

or

services

do

not

imply

that

IBM

intends

to

make

these

available

in all

countries

in

which

IBM

operates.

Any

references

to

an IBM

licensed

program

or

other

IBM

product

in

this

publi-

cation is not intended

to

state

or

imply

that

only

IBM's

program

or

other

product

may

be used.

Any

functionally

equivalent

program

that

does not

infringe

any

of

IBM's

intellectual

property

rights

may

be used instead

of

the IBM

product. Evaluation and

verification

of

operation

in

conjunction

with

other

pro-

ducts,

except

those

expressly

designated

by IBM, is the

user's

responsibility.

IBM

may

have

patents

or

pending

patent

applications

covering

subject

matter

in

this

dOGument. The

furnishing

of

this

document

does

not

give

you any

license

to

these

patents. You can send

license

enquiries,

in

writing,

to

the

IBM

Director

of

Commercial

Relations, IBM

Corporation,

Purchase,

NY

10577.

The

following

terms,

DENOTED BY AN ASTERISK (*), used in

this

publication,

are

trademarks

of

the

IBM

Corporation

in

the

United States

or

other

countries:

NetView

PS/2

RETAIN

System/370

3090

iii

(

iv

3745

Service Functions

________________________________

._~.ccc

o Contents

Chapter 1.

How

to

Use the MOSS Function Screens

Chapter

2.

BER

(Box

Event Records) Analysis

Chapter

3.

Diagnostics

.............

.

Chapter

4.

Transmission Subsystem (TSS) Functions

Chapter

5.

TRSS Functions

1-1

2-1

3-1

4-1

5-1

Chapter

6.

Displaying Dumps, Storage and Modules, and Deleting Files

6-1

Chapter

7.

Applying

and Displaying

Microcode

Fixes (MCF)

Chapter

8.

Handling Patches

to

Microcode

Chapter

9.

Configuration Data File (CDF)

Chapter 10. CA Services

.........

.

Chapter

11. Disk-Diskette Management Functions

Chapter 12. SIT, POS, TIM,

IPL

Functions

List

of

Abbreviations

Glossary

Index

..

7-1

8-1

9-1

10-1

11-1

12-1

X-3

X-11

X-17

v

(

vi 3745 Service Functions

'0

)

About This Book

Who Should Use This Book

This

manual

is addressed

to

the service

representatives

who

maintain

the

IBM

3745

Communication

Controllers.

Primary

audience: Product Trained (PT)

CE

Secondary

audience: Product Support

Trained

(PST)

CE,

Program

Service

Representative (PSR), Product Engineering (PE)

How To Use This Book

This

manual

describes

how

the

service

functions

that

are

specifically

for

the

CE,

and not intended

for

customer, are used from

the

operator

console.

The

operator

panel procedures are not given in

this

manual.

This

manual

must

be used in conjunction

with

the

3745

bibliography.

Where to Find More Information

For a

complete

list

of

the

3745

customer

and

service

information

manuals,

see

the

bibliography

in

the

3745 Models

13011501170

Maintenance

Information

Proce-

dures

(MIP), SY33-2070.

A 3745

Models

130/150/170 Service Documentation

Bibliography

is

provided

on

page

X-1

at

the

end

of

this

manual.

The

following

3745

publications

can be used in

connection

with

this

manual.

• 3745

Advanced

Operations Guide, SA33-0097 (from dash

3)

• 3745 Basic Operations Guide, SA33-0146

• 3745 Channel

Adapter

On-Line Tests, D99-3745A

• 3745 Diskette

Configurator

Guide, GA33-0093

• 3745 Diagnostic Descriptions, SY33-2076

• 3745

Installation

Guide, SY33-2067

• 3745

Introduction,

GA33-0138

• 3745 Connection

and

Intregration

Guide, SA33-0141

• 3745 Maintenance Information Procedures (MIP), SY33-2070

• 3745 Hardware Maintenance Reference (HMR), SY33-2066

• 3745

Original

Equipment Manufacturers

Information,

SA33-0099

• 3745 Parts Catalog, S135-2012

I~

• 3745 Principles

of

Operations, SA33-0102

• 3745 Problem Determination Guide, SA33-0145

• 3745 Console Setup Guide, SA33-0158

• 3745

IBM

Products Safety Handbook, GA33-0126

• 3745 IBM Service Manual Index, SY33-2079.

/

(

viii 3745 Service Functions

)

Chapter

1.

How

to

Use

the MOSS Function Screens

Your Road Map in the Service Functions

Where

to

Go

...............

.

Initial Screen and Menu Screens

How

to

Go from Initial Screen

to

Menu Screens

Sign

ON

Procedure

.......

.

CA/Host

Attachment Information

.......

.

MOSS Console Screen Layout

........

.

Common Commands and F Keys Description

Keyboard Differences and

Terminology

Machine Status Area

.............

.

MSA Fields Definition (CCU Information) .

MSA Field Definition (Scanner Information)

MSA Fields Definition (IPL Information)

..

MSA Field Definition (Token-Ring/TIC Information)

Short Description

of

the

3745

Controller Subsystem

'"

Transmission Subsystem

MOSS

...........

.

Power Control Subsystem

Programming Support

....

Maintenance Philosophy

Repair Action in Case

of

Error

No

FRU

Isolation

.......

.

Diskette Mode

....

.

MOSS

Operator

Consoles

1989,

1990

1-3

1-4

1-5

1-6

1-7

1-8

1-9

1-10

1-14

1-16

1-18

1-20

1-21

1-22

1-23

1-1

About Examples

--------------------------------------------------------------~

Every

time

a

screen,

used

to

illustrate

a

procedure,

shows

the

MSA

(machine

status area),

the

dis-

played

configuration

corresponds

to

a 3745-170.

1-2 3745 Service Functions

(

: -

, -

~/

(

Ii

I

0 Your Road Map

in

the Service Functions

The following table indicates the chapter containing the type

of

information you are looking for.

You

are

You Want To

Working On

>-

..J

II

E

:!

'-

(j

'-

>-

c;

cu

0.

0

c;

15.

E

'-

S

V;

II

"

II II

.e

c:

"

~

0.

'-

III

j

II

j

Qi

Q.

~

0

25

0

oS

2:

0:

tn :;:)

BER

2 2

CDF 9 9 9 9

Channel 9 9 9

10

)

Adapters

Diagnostics 3 3 3

Disk I

11

diskette

Dump files 6 6

HPTSS 9 9 4 4 9

lIC

9 9

Une

9 9 9 9

Adapters

) MCF 7 7 7

MUX

Patch 8 8 8 8 8

Scanners 4 9 4 4 4

TRA 9 5 9 5 5

TRSS 9 4 9 4 4

TSS 9 4 9 4 4

,)

More

deta.led 'Road

Maps'

are provided at the beginning

of

chapters

4,

5 and

9.

Chapter

1.

How

to

Use the

MOSS

Function Screens 1-3

Where to Go

Display

BERs

Correlate

BERs

Interpret

a refcode

Run

diagnostics

from

the console

and

OLTs

Select/release

a

TSS

or

HPTSS

scanner

Display/alter

scanner control storage

and

registers

Dump

or

IML

a scanner

Modify

the scanner

mode

Perform

a scanner address

compare

Start

scanner checkpoint

trace.

Select/release

a

TRA

Display/alter

token-ring storage,

registers

or

parameter blocks

Dump

a

TRA

Connect/disconnect a

TRA

Perform

a scanner address

compare

Start

scanner checkpoint

trace.

Display storage,

dumps

and

modules

Delete

Dump

files

or the

BER

file

Apply

or

restore

microcode fixes

Display the

MCF

history

List the old or

new

MCF

Create, modify, or apply microcode patches

Create, upgrade,

verify,

or display the

CDF

(CDF:

configuration data

file)

Display/update

CA,

LA,

or ports

Shutdown/restore a

CA

Connect/disconnect a

CA

Insert/remove

CA

in/from

ASC/CSCG

chain

Save,

restore,

format,

change

and

analyze the

~1OSS

disk

Install

an

engineering

change

(EC)

Run

the scanner

interface

trace

(SIT)

Change

the battery

Dump

the

power

subsystem storage

Handle

the time services

(TIM)

1-4 3745 Service Functions

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter

18

Chapter

11

Chapter

12

('

i

\

(

I

i:

1

I

I!O

' I

)

,)

I

:>

Initial Screen

and

Menu Screens

Initial

screen

I

+.-------

OR

CA/Host

attachment

information

+

B

-

BER

Display

(ELD)

-

Microcode

Fixes

and

Patches

(MCF)

-Display/Update

CA,

LA

and

Ports

(CDF)

-

CDF

Create/Upgrade/

Verify/Display

(CDF)

-

Disk

Functions

(DIF)

-Scanner Interface

Trace

(SIT)

-

Time

Functions

(TIM)

Password

screen

Selection

rules

B

Customer

Functions

No

Menu

2 function

described in

this

manual

(*) Available only

if

the

MAINTENANCE

password

was

entered

MOSS

Screens

+

GJ

(*)

-

BER

Refcodes

(BRC)

-Diagnostics

(ODG/CDG)

-

TSS

Functions

(TSS)

-

TRSS

Functions

(TRS)

-

MOSS

Storage Display

(MSD)

-

CA

Services

(CAS)

-

Power

Dump

(POS)

-Battery

Change

(POS)

The next page tells you how

to

sign

ON

and gain access

to

the menu screens.

Chapter

1.

How

to Use the

MOSS

Function Screens 1-5

Sign ON

How to

Go

from Initial Screen

to

Menu Screens

Sign ON Procedure

This

is

the first screen displayed after IML.

It

gives the status of channel adapters.

You must sign ON before gaining access to the

menu screens.

1.

Ask the customer to give

you

the maintenance

password.

2.

If this screen

is

not already displayed, logoff

from MOSS (after customer approval)

by

typing 'OFF'.

3.

When this screen

is

displayed, press F4.

4.

Screen m

is

displayed.

1.

Enter the password

in

D.

2.

Press SEND.

3.

Screen

II

is

displayed.

You must use the maintenance password to

access the menu

3,

or

some mai'ntenance options

of

the customer functions.

F Keys action

F4 Retu

rn

to screen

Il

Go to the desired MENU screen

by

pressing any

of

the following F keys

F2

Menu 2 screen

F4 Menu 1 screen

F5 Menu 3 screen (Available only if the mainte-

nance password was entered)

1-6 3745 Service Functions

CUSTOMER

10:

3745

SERIAL

W!~BER:

3745

MICROCODE

(Cl

COPYRIGHT

IB~'

CORP:

1987

MAXI~1UM

ADAPTER

CONFIGURATION:

CHANNEL

ADAPTERS

5,

6, 7, 8

LINE

ADAPTERS

I,

3,

4,

9,

19,

II,

12

•

••••••..••.••••••••••..••••••••••••••••••••••••••••••••••••••••

ff'~/dd/yy

hh:mn

CA

INTERFACE

DISPLAY

INTERFACE

CHANGE

E/D

INTERFACE

~OST

OR

CHAN'JEL

NSC

NUMBER

EID

REO

REOUEST

STATUS SWITCH

UNIT

ADDRESS

D

lA

2A

3A

4A

SA

01

SABLED

26

6A

DISABLED

21

7A

DISABLED

aa

BA

DISABLED

sa

TYPE

E

OR

0

TO

CHANGE

THE

ENABLE/DISABLE

REQUEST,

THEN

PRESS

SEND

F4:MOSS

FUNCTIONS

F5:UPDATE

Figure 1-1. Channel Adapter Status Screen

CUSTOMER

10:

3745

SERIAL

NUMBER:

3745

MICROCODE

(C)

COPYRIGHT

IBM

CORP:

1987

MAXIMUM

ADAPTER

CONFIGURATION:

CHANNEL

ADAPTERS

5,

6,

7, 8

LINE

ADAPTERS

I,

3,

4,

9,

16, 11,

12

••••..••••••••••••••••••••••••••••••••••••••••••••••••••••••••••

mm/dd/yy

hh:mn

ENTER

PASSWORD

===>

D

F4:CHANNEl

INTERFACE

DISPLAY

Figure 1-2. Password Screen

II

FUNCTION

SELECTION

RULES

•

TO

SElECT

ONE

OF

THE

MENUS,

PRESS

THE

APPROPRIATE

KEY

•

TO

SELECT

A

FUNCTION,

ENTER

ITS

3'CHARACTER

NAME

THEN

PRESS

SE~O

•

ONCE

YOU

HAVE

SElECTED

A

FUNCTION

FROM

ONE

MENU,

yOU

MAY

SElECT

A

FUNCTION

FROM

THE

OTHER

•

TO

END

THE

FUNCTION

ON

SCREEN,

PRESS

F1

•

TO

RETURN

TO

THE

PENDING

FUNCTION,

PRESS

F2

•

TO

LOGOFF,

ENTER

OFF

THEN

PRESS

SEND

F1

:END

F2:MENU2

F3:ALARM

F4:MENUI

F5

:MENU

3

Figure 1-3. Function Selection Rules Screen

;-

(

10

)

:>

, I

I

1'1

)

CA/Host Attachment Information

No

password

is

necessary

to

use

this

screen.

You may:

Enable

or

disable

a

CA

1.

Type

E (Enable)

or

D (Disable) in

the

column

0,

in

front

of

the

selected

inter-

face

number.

2.

Press SEND.

3.

You keep

the

same

screen.

Change

the

CAl

host

attachment

parameters

1.

Press

F5.

Screen

II

is

displayed

..

1.

Type a

CA

number

in

D.

2.

Press SEND.

3.

Screen

II

is displayed.

To

update

the

CA

parameters,

refer

to

"Display/Update

Channel

Adapters"

on page 9-19.

1.

Enter

parameter(s)

in 0 and

fJ

(interface

A

only),

or

in D

to

D

(if

both

interface

A and

B

are

present).

2.

Press SEND.

3.

Press F6

to

return

to

screen

II.

CA/Host

CUSTOMER

10:

3745

SERIAL

NUMBER:

3745

MICROCODE

(C)

COPYRIGHT

IBM

CORP:

19B7

MAXIMUM

ADAPTER

CONFIGURATION:

CHANNEL

ADAPTERS

5,

6,

7,

8

LINE

ADAPTERS

I,

3,

4,

9,

10,

II,

12

••••••••••••••••••••••••••••••••••••••••••••••••••••••

"""""

mm/dd/yy hh:mn

CA

INTERFACE

DISPLAY

INTERFACE

CHANGE

E/O

INTERFACE

HOST

OR

CHANNEL

NSC

NUflBER

EtD

REQ

REQUEST

STATUS

SWITCH

UNIT

ADDRESS

lA

2A

3A

4A

SA

6A

7A

SA

D

DISABLED

•

TYPE

E

OR

D

TO

CHANGE

THE

ENABLE/DISABLE

REQUEST,

THEN

PRESS

SEND

F4:MOSS

FUNCTIONS

U'[email protected]

Figure

1-4.

Channel

Adapter

Status

Screen

o

CA

INTERFACE

DISPLAY

ENTER

CA

NUMBER

(1

TO

16)

==>

D

fl

:ENO

F3:ALARM

F6:QUIT

Figure 1-5. CA Number Selection Screenl

D

CA

INTERFACE

DISPLAY

CA

xx

HOST

ATTACHMENT

INFORMATION

• FILL

IN,

OR

MODIFY,

OR

BLANK

FOLLOWING

FIELDS,

THEN

PRESS

SEND

26

21

oe

00

INTERFACE

A

INTERFACE

8

HOST

OR

SWITCHING

UNIT

10

(8

CHARACTERS

MAX)

==>

0

==>

II

CHANNEl

ADDRESS

OR

CHPID

(8

CHARACTERS

MAX)

==>

fJ

==>

D

Fl:END

F3:ALARM

F6:0UIT

Figure 1-6. CA Host

Attachment

Information

Screen

Chapter

1.

How

to

Use the MOSS Function

Screens

1-7

MOSS Screen

MOSS Console Screen Layout

CUSTOMER

10

MACHINE TYPE

SERIAL NUMBER

For information on

the

console and keyboard, refer to the

documentation

sup-

plied

with

the

console.

CUSTONER

10:

xxxxxxxxxxxxx

3745-1xO

SERIAL

NUMBER:

nnnnnnn

1

tCU-A

2

RESET

3

NSA

(Machine

Status

Area)

lines 2

to

7 4

NAXWUt4

ADAPTERS

CONFIGURATION:

CHANNEL

ADAPTERS

5,

6, 7, 8 5

LINE

ADAPTERS

1,

3,

4,

9,

10, 11,

12

6

---------------------------------------------------------------mm/dd/yy

hh:mm

1

FUNCTION

ON

SCREEN:

FUNCTION

PENDING:

FUNCTION

area (lines 8

to

21)

===> <

••••••••••••••••••••

MESSAGE

area

••••..••••.••••.••.•••••.•••..•

>

<

•••••••••••••••••••••••••

ALARM

area

••.•.•••••.•••••••••••.•••••••••

>

Fl:

END

F2:MENU1

F3:ALAR~1

<

......

F

KEY

line

<

......................

CONSOLE

TERMINAL

INFORMATION

..................

>

Figure 1-7. 3745 Console Screen

Main

Areas

8

9

20

21

22

23

24

25

Customer

identification,

permanently

displayed

(16

characters). This

informa-

tion is entered by the customer, using

the

password

management

function.

3745-1xO

(1xO

can be 130, 150

or

170)

Machine

serial

number

of

the

3745

(7

characters). Permanently displayed.

This

information

is entered by manufacturing,

or

when formatting a

new

disk.

MACHINE STATUS AREA

Current

status

of

the

CCU and scanners, token-ring/TIC

or

IPL

progression.

Lines 5 and 6

permanently

display

the

maximum

configuration

possible

on

your

3745

(not

the

actual

configuration

of

your

machine), according

to

the

model. You

may

refer

to

"General

Information"

in

the

Hardware Maintenance

Information"

for

a description

of

the

different models.

FUNCTION ON SCREEN_When a function is displayed,

the

name

of

the

function is

written

it.

FUNCTION PENDING When a function is pending, its

name

is

written

it.

FUNCTION AREA Function

display

and

operator

input. This

area

includes the

different

menus

(customer

and FE/eE).

MESSAGE AREA

Operator

control and function messages

are

displayed in

that

area.

ALARM

AREA The first

alarm

is displayed and

the

following ones are queued (up

to

five

alarms

can be queued).

• When

there

is no

alarm;

the

word

ALARM

does not appear.

• When

there

is

more

than

one

alarm,

the

word

ALARM is blinking.

• Pressing

F3

displays

the

The

alarms

give

the

probable

cause,

the

area

of

the error, and a reference

code

that

may

lead

to

an

FRU

list.

All

alarms

are

listed in

the

3745

Problem

Determination manual, SA33-0145.

1-8 3745 Service Functions

i

I-

I

(

)

II

)

:>

F KEY LINE Lists all

the

defined F

~eys

(Only

the

available

F keys

are

shown).

CONSOLE TERMINAL INFORMATION Gives

information

on

the

communication

between

the

console

and

the

MOSS.

Common

Commands

and F

Keys

Description

OFF (Log OFF)

F1

(END)

F3

(ALARM)

F6 (QUIT)

F7 (FORWARD)

Fa

(BACKWARD)

Disconnection from MOSS.

Note: You

cannot

use OFF

while

a function is

active

or

pending;

press

F1

to

terminate

it.

If

a function is running,

pressing

F1

terminates

that

function. The

displayed.

1.

Erases the

displayed

alarm

(if

any)

from

the

alarm

area.

2.

Displays the

still in queue.

Note: Please

note

all

information,

especially

the

reference

code,

before

erasing

the

alarm.

This

information

can

still

be found by

displaying

the

BERs.

Return

to

the

same

function. Not

available

in

the

first

screen

of

a function; in

this

case, use

F1:

END.

Allows

going

to

the

Allows

going

back

to

the

Note:

Depending

of

the

amount

of

information

displayed

or

requested,

or

the

step

of

the

procedure,

any

(or

both)

of

the

F7/FB

key(s)

may

be

present

(or

not)

on the screen.

Keyboard

Differences and

Terminology

Because

different

types

of

consoles

may be

installed,

the

keyboards

used

may

vary, from

country

to

country, and from

customer

to

customer.

For

standardization,

we

use

specific

terminology

when

referring

to

some

keys

of

the keyboard:

SEND

BREAK

The key pressed

to

confirm

the

data

just

typed

in.

Sometimes

known as the

ENTER

key.

The key pressed

to

interrupt

the

automatic

transmission,

in

order

to

communicate

directly

with

the

system

(also

known as ATTN

or

INTERRUPT key). This key is

also

used

to

stop the

refresh

of

the

MSA.

Fn

Any

function key

(F1-FB)

of

the keyboard.

For

operation

information,

refer

to

the

console

documentation.

Chapter

1.

How

to

Use the

MOSS

Function Screens 1-9

MSA (CCU)

Machine Status Area

The

3745

status is permanently displayed (and updated every

500

ms) on lines 2

to

7

of

the

operator

console screen, called the machine status area (MSA). Dif-

ferent types

of

information are displayed

in

the MSA.

Lines 2 and 3

Line 4

Lines 5 and 6

CCU

information.

CCU,

IPL, scanner

or

token-ring/TIC information

Adapters hardware configuration.

MSA

Fields Definition

(CCU

Information)

Field

A

Field B

Field C

Field 0

CUSTOMER

ID:

3745

SERIAL

NUMBER:

CCU-A

PROCESS

MOSS

OFFLINE

BT

X71:xxxxxx

LAR:xxxxxx

OP:XXXX

C:O

RUN

STOP-IOC-CHK

STOP-CCU-CHK

AC

X72:xxxxxx

IAR:xxxxxx

ILVL:xxxx

Z:O

Figure 1-8. MSA Example with

CCU

Information

[aU!]

c=J

!PROCESsll~10SS

OFFLINE1

B

!X71:xxxxxxl!LAR:xxxxxx

OP:xxxx

c:ol

~

!STOP-IOC-CHKI

!STOP-CCU-CHKI

~

!X72:xxxxxxl

!IAR:XXXXXX

ILVL:xxxx

z:ol

~

0

Figure 1-9. Fields

of

the CCU

Information

in

the MSA

Always: CCU-A

Unused

CCU

mode:

PROCESS

I-STEP Normal processing.

Instruction step.

Indicates

whether

MOSS is connected

to

the

CCU

control program:

MOSS-ONLINE MOSS is connected

to

the

CCU

control program.

MOSS-OFFLINE MOSS is not connected

to

the

CCU

control program.

MOSS-ALONE MOSS is operational

while

the CCU control

program

is not

loaded

or

not operational.

To put MOSS alone, when it is online

or

offline, you may:

• Perform CCU RST function (see Advanced Operations

Guide),

or

• Perform the following actions:

1-10

3745

Service Functions

rf

~---

/

(

' ,

"D

)

I'

I

II

I))

Field E

Field F

MSA (CCU)

1.

Power

the machine

OFF,

and

wait

for about 10

seconds.

2.

Power

the

machine ON.

3.

Wait for the end

of

IML.

SERVICE-MODE MOSS is in maintenance mode (service personnel only).

Status

of

the MOSS after the different IMLs and IPLs:

After

MOSS

Status

Control Panel

Hex

Display

Initialization MOSS

online

X'OOO'

(general IPL)

MOSS

IML

MOSS alone

if

CP

IS not loaded X'FOE'

MOSS offline

If

CP

IS

loaded X'FOF'

CCU/scanner IPL MOSS

online

X'OOO'

Step-by-step

IPL

MOSS

online

X'OOO'

Bypass

phase

1 IPL MOSS

online

X'OOO'

Displays BT (highlighted) when

the

branch

trace

function is active.

It is updated each

time

an output X'71' instruction is executed.

Output X'71' contents are buffered.

If,

due

to

intensive output,

the

buffers are

overrun,

some

data

may

be lost; however,

the

last value in

output

will be dis-

played.

X71

=xxxxxx

Contents

of

CCU X'71' output

register.

X71

= ERROR

Error

when accessing the register.

Register

contents cannot be

displayed.

At

initialization time, field

'F'

displays:

X71=xxyyzz

xx

are

the

3745

initialization flags

with

the

following meaning:

01

02

05

06

09

OA

11

20

21

22

25

26

29

Load/dump

request detected on a link-attached

3745.

Load/dump

request detected on a channel-attached 3745.

Dump in progress on a link-attached

3745.

Dump in progress on a channel-attached 3745.

Control

program

load in

progress

on a link-attached 3745.

Control

program

load in

progress

on a channel-attached

3745.

Remote

power

OFF

(RPO)

command

is detected.

Control

program

loader/dump

abend before a

load/dump

request detected on a channel-attached

or

link-attached

3745.

Control

program

loader/dump

abend on a

load/dump

request detected on a link-attached

3745.

Control

program

loader/dump

abend on a

load/dump

request detected on a channel-attached 3745.

Control

program

loader/dump

abend on a link-attached

3745

dump.

Control

program

loader/dump

abend on a channel-attached

3745

dump.

Control

program

loader/dump

abend on a link-attached

3745

control program.

Chapter

1.

How to Use the MOSS Function Screens 1-11

IBM 3745 Series Parts list manual

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